(0 8 7)(1 20 16 14 3)(2 6 4)(5 11 9)(10 21 19 15 12)(13 18 17)
ALLOWS (11/8)-SEQUENCE
1: (0 8 17)
(0 13 18 17 7)(1 20 16 14 3)(2 6 4)(5 11 9)(8)(10 21 19 15 12)
2: (1 20 16)
(0 13 18 17 7)(1 14 3)(2 6 4)(5 11 9)(8)(10 21 19 15 12)(16)(20)
3: (0 13 18)
(0 17 7)(1 14 3)(2 6 4)(5 11 9)(8)(10 21 19 15 12)(13)(16)(18)(20)
4: (15 21 19)
(0 17 7)(1 14 3)(2 6 4)(5 11 9)(8)(10 21 12)(13)(15)(16)(18)(19)(20)